25250004980 has 24 divisors (see below), whose sum is σ = 54318305160. Its totient is φ = 9853660160.

The previous prime is 25250004977. The next prime is 25250004991. The reversal of 25250004980 is 8940005252.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 8421604 + 25241583376 = 2902^2 + 158876^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 25250004980.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15395525 + ... + 15397164.

It is an arithmetic number, because the mean of its divisors is an integer number (2263262715).

Almost surely, 2^25250004980 is an apocalyptic number.

25250004980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25250004980 is an abundant number, since it is smaller than the sum of its proper divisors (29068300180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25250004980 is a wasteful number, since it uses less digits than its factorization.

25250004980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30792739 (or 30792737 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The spelling of 25250004980 in words is "twenty-five billion, two hundred fifty million, four thousand, nine hundred eighty".